Growth and Development of Homeothermy in Nestlings of Eurasian Spoonbill (Platalea eucorodia)
- Received Date: 1900-01-01
- Rev Recd Date: 1900-01-01
- Publish Date: 2003-08-22
Abstract: Body mass (BM),body length (BL),wing length,tarsus length,and body temperature (T[b]) of 13 nestlings of Platalea leucorodia at Zhalong Natural Reserve (47°29′N,124°02′E) were measured every two days in a period from April to June in 1994 and 1995.The growth of the nestlings was in keeping with the logistic equation,and the highest relative growth rate appeared in the period of 4-8 days.T[b] steadily increased with age in days and not fluctuated with ambient temperature (T[a]),and the extent of reduction in T[b] after cold exposure of 25 min to T[a] progressively decreased.Nestlings within first 28 days,BM was positively corrected with T[b] in nests and after cold exposure,and BM and BL were also positively related to the index of homeothermy.This means that body growth is in synchronization with thermogenic ability,reflecting the character of altricial nestlings.
|Citation:||LIU Jin-song, WANG De-hua, SUN Ru-yong. Growth and Development of Homeothermy in Nestlings of Eurasian Spoonbill (Platalea eucorodia). Zoological Research, 2003, 24(4): 249-253.|